title: The utility of single-balloon enteroscopy for the diagnosis and management of small bowel disorders according to their clinical manifestations: a retrospective review.
abstract: BACKGROUND
  The advent of double-balloon enteroscopy has enabled more accurate diagnosis and treatment of small bowel disorders. Single-balloon enteroscopy permits visualization of the entire small intestine less often than does double-balloon enteroscopy. However, the relative clinical advantages of the 2 methods remain controversial. This study therefore aimed to identify the indications for and therapeutic impact of performing single-balloon enteroscopy.
  
  
  METHODS
  We retrospectively reviewed prospectively collected data from adults who underwent single-balloon enteroscopy from January 2007 through November 2011 and analyzed their baseline characteristics, endoscopic findings, pathological diagnoses, and clinical outcomes.
  
  
  RESULTS
  A total of 145 procedures were performed in 116 patients with a mean age of 58.1 ± 17.7 years (range, 18-89 years). The most common indications for performing single-balloon enteroscopy were overt gastrointestinal (GI) bleeding, chronic diarrhea, and occult GI bleeding, accounting for 57.9%, 12.4%, and 9.7% of the patients, respectively. The area of interest was achieved in 80.7% of the cases, with a 5.5% rate of technical failure. An overall positive finding was detected in 65.5% of the cases, of which 33.8% were ulcers and erosions; 8.3%, masses; and 3.4%, angiodysplasia. The diagnostic yields were 42.9%, 52.4%, 78.6%, 50.0%, and 25.0% for patients with overt GI bleeding, occult GI bleeding, abdominal pain, chronic diarrhea, and abnormal imaging results, respectively. Therapeutic procedures were performed in 11% of patients with GI bleeding and achieved a therapeutic yield of 14.6% with a minor complication rate of 11.7%.
  
  
  CONCLUSIONS
  Single-balloon enteroscopy was effective for the diagnosis and treatment of small bowel disorders, especially in patients who presented with abdominal pain, GI bleeding, or focal abnormalities on imaging scans.
authors.forename: Varayu
authors.initials: V
authors.lastname: Prachayakul
authors.forename: Morakod
authors.initials: M
authors.lastname: Deesomsak
authors.forename: Pitulak
authors.initials: P
authors.lastname: Aswakul
authors.forename: Somchai
authors.initials: S
authors.lastname: Leelakusolvong
mesh_terms: D015746:Abdominal Pain / Q000209:etiology; D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002908:Chronic Disease; D003967:Diarrhea / Q000209:etiology; D016099:Endoscopy, Gastrointestinal / Q000009:adverse effects / Q000379:methods*; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology; D006801:Humans; D007410:Intestinal Diseases / Q000175:diagnosis* / Q000601:surgery*; D007421:Intestine, Small / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D009780:Occult Blood; D012189:Retrospective Studies; D055815:Young Adult